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1.
When you get a couple of strokes in but there's no money shot due to an inconvenient location or situation.
Wale: I was gonna fuck this girl, but my roommate had a girl in the room. So we had to go to the bathroom, but it was really cramped and we couldn't finish.

Dr. Dre: Oh so you got the half-body?

Wale: Yeah, pretty much The half-body sometimes can leave you with blue balls though.
by PajamaBoy September 01, 2011